【摘要】 研究了不同施氮量处理(施纯氮16 kg/667 m2,处理A;施纯氮26 kg/667 m2,处理B;施纯氮36 kg/667 m2,处理C)对机采茶园茶叶品质与土壤理化性状的影响。结果表明:随着施氮量的增加,机采茶叶的完整率和产量均增加;以处理B的茶叶游离氨基酸含量最高,茶叶酚氨比最低,土壤CO2通量最高;经不同处理后茶园土壤养分含量表现为C处理>A处理>B处理。说明适量施氮处理有利于提高茶树对土壤的养分利用率,增加茶叶生化成分含量,提高茶叶品质。更多还原

【Abstract】 The impacts of different nitrogen(N) application rate treatments(applying pure N 16 kg/667 m2,treatment A;applying pure N 26 kg/667 m2,treatment B; applying pure N 36 kg/667 m2,treatment C) on the tea quality and the soil physical and chemical properties in mechanically-picked tea garden were studied. The results showed that both the yield and the complete rate of mechanically-picked fresh tea leaves were increased as the application rate of nitrogen increased. In treatment B,the tea leaves had the highest free amino acid content and the lowest phenol-ammonia ratio,and the CO2 flux in soil was the highest.After being treated with N fertilizer,the soil nutrient content in tea garden revealed the following order: treatment C> treatment A>treatment B. The above results indicate that applying proper N fertilizer can enhance the soil nutrient utilization efficiency of tea tree,increase the content of biochemical compositions in tea leaf,and improve the quality of tea leaf.更多还原